2399167940 has 48 divisors (see below), whose sum is σ = 5458015920. Its totient is φ = 885830400.

The previous prime is 2399167933. The next prime is 2399167951. The reversal of 2399167940 is 497619932.

It can be written as a sum of positive squares in 8 ways, for example, as 2282355076 + 116812864 = 47774^2 + 10808^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16640 + ... + 71240.

It is an arithmetic number, because the mean of its divisors is an integer number (113708665).

Almost surely, 2^2399167940 is an apocalyptic number.

2399167940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2399167940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2729007960).

2399167940 is an abundant number, since it is smaller than the sum of its proper divisors (3058847980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2399167940 is a wasteful number, since it uses less digits than its factorization.

2399167940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54649 (or 54621 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 50.

The square root of 2399167940 is about 48981.3019426801. The cubic root of 2399167940 is about 1338.7111577302.

The spelling of 2399167940 in words is "two billion, three hundred ninety-nine million, one hundred sixty-seven thousand, nine hundred forty".